title: Regional variation in survival following pediatric out-of-hospital cardiac arrest.
abstract: BACKGROUND
  Although regional variation in outcome after adult out-of-hospital cardiac arrest (OHCA) is known, no clinical studies have assessed this in pediatric OHCA.
  
  
  RESULTS
  This nationwide, prospective, population-based observation of the whole of Japan included consecutive OHCA patients with resuscitation attempt from January 2005 through December 2009. Primary outcome was 1-month survival with neurologically favorable outcome. Japan was divided into the following 7 regions as the largest administrative units: Hokkaido-Tohoku, Kanto, Tokai-Hokuriku, Kinki, Chugoku, Shikoku, and Kyushu-Okinawa. The outcome of pediatric OHCA was then compared between the regions. Multiple logistic regression analysis was used to adjust for other factors that were considered to influence the relationship between region and outcome. A total of 8,240 pediatric OHCA patients were registered during the study period. One-month survival with neurologically favorable outcome significantly differed by region: 2.5% (24/967) in Hokkaido-Tohoku (adjusted odds ratio [AOR], 1.65; 95% confidence interval [CI]: 0.94-2.90), 2.9% (47/1614) in Tokai-Hokuriku (AOR, 2.06; 95% CI: 1.28-3.31), 2.1% (26/1239) in Kinki (AOR, 1.45; 95% CI: 0.84-2.51), 3.4% (16/465) in Chugoku (AOR, 3.11; 95% CI: 1.62-6.00), 1.5% (4/259) in Shikoku (AOR, 0.79; 95% CI: 0.26-2.43), and 2.8% (27/974) in Kyushu-Okinawa (AOR, 2.15; 95% CI: 1.24-3.74) referred to Kanto (1.4%, 37/2722).
  
  
  CONCLUSIONS
  According to Japanese nationwide OHCA registry data there are significant regional variations in the outcome of pediatric OHCA.
authors.affiliation: Department of Pediatrics, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences.
authors.forename: Yoshio
authors.initials: Y
authors.lastname: Okamoto
authors.forename: Taku
authors.initials: T
authors.lastname: Iwami
authors.forename: Tetsuhisa
authors.initials: T
authors.lastname: Kitamura
authors.forename: Masahiko
authors.initials: M
authors.lastname: Nitta
authors.forename: Atsushi
authors.initials: A
authors.lastname: Hiraide
authors.forename: Tsuneo
authors.initials: T
authors.lastname: Morishima
authors.forename: Takashi
authors.initials: T
authors.lastname: Kawamura
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007564:Japan / Q000453:epidemiology; D008297:Male; D058687:Out-of-Hospital Cardiac Arrest / Q000401:mortality* / Q000628:therapy; D011446:Prospective Studies; D012042:Registries; D015996:Survival Rate; D013997:Time Factors